The following problem deals with Simpson's paradox. A medical study compared a procedure by which kidney stones are removed throu puncture wound in the skin with other open surgical procedures. Removal with small puncture wound Other open surgic Small stones 234 successes 81 succes
The following problem deals with Simpson's paradox. A medical study compared a procedure by which kidney stones are removed throu puncture wound in the skin with other open surgical procedures. Removal with small puncture wound Other open surgic Small stones 234 successes 81 succes
A First Course in Probability (10th Edition)
10th Edition
ISBN:9780134753119
Author:Sheldon Ross
Publisher:Sheldon Ross
Chapter1: Combinatorial Analysis
Section: Chapter Questions
Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...
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Transcribed Image Text:4. The following problem deals with Simpson's paradox.
A medical study compared a procedure by which kidney stones are removed through a 1-cm
puncture wound in the skin with other open surgical procedures.
Removal with small puncture wound | Other open surgical procedures
Small stones
81 successes
in 87 attempts
192 successes
in 263 attempts
234 successes
in 270 attempts
55 successes
in 80 attempts
Large stones
• Which procedure was more successful with small stones?
• Which procedure was more successful with large stones?
• Which procedure was more successful with kidney stones, regardless of size?
• Which procedure is better?
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